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isc_cam.c
(8.81 KB)
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isc_sm.c
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isc_soc.c
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isc_subr.c
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iscsi.c
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iscsi.h
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iscsi_subr.c
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iscsivar.h
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Editing: iscsi.h
/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2005-2010 Daniel Braniss <danny@cs.huji.ac.il> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* | $Id: iscsi.h 743 2009-08-08 10:54:53Z danny $ */ #define TRUE 1 #define FALSE 0 #ifndef _KERNEL typedef int boolean_t; #endif #include <cam/cam.h> #define ISCSIDEV "iscsi" #define ISCSI_MAX_TARGETS 64 /* | iSCSI commands */ /* | Initiator Opcodes: */ #define ISCSI_NOP_OUT 0x00 #define ISCSI_SCSI_CMD 0x01 #define ISCSI_TASK_CMD 0x02 #define ISCSI_LOGIN_CMD 0x03 #define ISCSI_TEXT_CMD 0x04 #define ISCSI_WRITE_DATA 0x05 #define ISCSI_LOGOUT_CMD 0x06 #define ISCSI_SNACK 0x10 /* | Target Opcodes: */ #define ISCSI_NOP_IN 0x20 #define ISCSI_SCSI_RSP 0x21 #define ISCSI_TASK_RSP 0x22 #define ISCSI_LOGIN_RSP 0x23 #define ISCSI_TEXT_RSP 0x24 #define ISCSI_READ_DATA 0x25 #define ISCSI_LOGOUT_RSP 0x26 #define ISCSI_R2T 0x31 #define ISCSI_ASYNC 0x32 #define ISCSI_REJECT 0x3f /* | PDU stuff */ /* | BHS Basic Header Segment */ typedef struct bhs { // the order is network byte order! u_char opcode:6; u_char I:1; u_char _:1; u_char __:7; u_char F:1; // Final bit u_char ___[2]; u_int AHSLength:8; // in 4byte words u_int DSLength:24; // in bytes u_int LUN[2]; // or Opcode-specific fields u_int itt; u_int OpcodeSpecificFields[7]; #define CmdSN OpcodeSpecificFields[1] #define ExpStSN OpcodeSpecificFields[2] #define MaxCmdSN OpcodeSpecificFields[3] } bhs_t; typedef struct ahs { u_int len:16; u_int type:8; u_int spec:8; char data[0]; } ahs_t; typedef struct { // Sequence Numbers // (computers were invented to count, right?) int cmd; int expcmd; int maxcmd; } req_sn_t; typedef struct { // Sequence Numbers // (computers were invented to count, right?) int stat; int expcmd; int maxcmd; } rsp_sn_t; typedef struct scsi_req { u_char opcode:6; // 0x01 u_char I:1; u_char _:1; u_char attr:3; u_char _0:2; u_char W:1; u_char R:1; u_char F:1; #define iSCSI_TASK_UNTAGGED 0 #define iSCSI_TASK_SIMPLE 1 #define iSCSI_TASK_ORDER 2 #define iSCSI_TASK_HOFQ 3 #define iSCSI_TASK_ACA 4 char _1[2]; int len; int lun[2]; int itt; int edtlen; // expectect data transfere length int cmdSN; int extStatSN; int cdb[4]; } scsi_req_t; typedef struct scsi_rsp { char opcode; // 0x21 u_char flag; u_char response; u_char status; int len; int _[2]; int itt; int stag; rsp_sn_t sn; int expdatasn; int bdrcnt; // bidirectional residual count int rcnt; // residual count } scsi_rsp_t; typedef struct nop_out { // the order is network byte order! u_char opcode:6; u_char I:1; u_char _:1; u_char __:7; u_char F:1; // Final bit u_char ___[2]; u_int len; u_int lun[2]; u_int itt; u_int ttt; req_sn_t sn; u_int mbz[3]; } nop_out_t; typedef struct nop_in { // the order is network byte order! u_char opcode:6; u_char I:1; u_char _:1; u_char __:7; u_char F:1; // Final bit u_char ___[2]; u_int len; u_int lun[2]; u_int itt; u_int ttt; rsp_sn_t sn; u_int ____[2]; } nop_in_t; typedef struct r2t { u_char opcode:6; u_char I:1; u_char _:1; u_char __:7; u_char F:1; // Final bit u_char ___[2]; u_int len; u_int lun[2]; u_int itt; u_int ttt; rsp_sn_t sn; u_int r2tSN; u_int bo; u_int ddtl; } r2t_t; typedef struct data_out { u_char opcode:6; u_char I:1; u_char _:1; u_char __:7; u_char F:1; // Final bit u_char ___[2]; u_int len; u_int lun[2]; u_int itt; u_int ttt; rsp_sn_t sn; u_int dsn; // data seq. number u_int bo; u_int ____; } data_out_t; typedef struct data_in { u_char opcode:6; u_char I:1; u_char _:1; u_char S:1; u_char U:1; u_char O:1; u_char __:3; u_char A:1; u_char F:1; // Final bit u_char ___[1]; u_char status; u_int len; u_int lun[2]; u_int itt; u_int ttt; rsp_sn_t sn; u_int dataSN; u_int bo; u_int ____; } data_in_t; typedef struct reject { u_char opcode:6; u_char _:2; u_char F:1; u_char __:7; u_char reason; u_char ___; u_int len; u_int ____[2]; u_int tt[2]; // must be -1 rsp_sn_t sn; u_int dataSN; // or R2TSN or reserved u_int _____[2]; } reject_t; typedef struct async { u_char opcode:6; u_char _:2; u_char F:1; u_char __:7; u_char ___[2]; u_int len; u_int lun[2]; u_int itt; // must be -1 u_int ____; rsp_sn_t sn; u_char asyncEvent; u_char asyncVCode; u_char param1[2]; u_char param2[2]; u_char param3[2]; u_int _____; } async_t; typedef struct login_req { char cmd; // 0x03 u_char NSG:2; u_char CSG:2; u_char _:2; u_char C:1; u_char T:1; char v_max; char v_min; int len; // remapped via standard bhs char isid[6]; short tsih; int itt; // Initiator Task Tag; int CID:16; int rsv:16; int cmdSN; int expStatSN; int unused[4]; } login_req_t; typedef struct login_rsp { char cmd; // 0x23 u_char NSG:2; u_char CSG:2; u_char _1:2; u_char C:1; u_char T:1; char v_max; char v_act; int len; // remapped via standard bhs char isid[6]; short tsih; int itt; // Initiator Task Tag; int _2; rsp_sn_t sn; int status:16; int _3:16; int _4[2]; } login_rsp_t; typedef struct text_req { char cmd; // 0x04 u_char _1:6; u_char C:1; // Continuation u_char F:1; // Final char _2[2]; int len; int itt; // Initiator Task Tag int LUN[2]; int ttt; // Target Transfer Tag int cmdSN; int expStatSN; int unused[4]; } text_req_t; typedef struct logout_req { char cmd; // 0x06 u_char reason; // 0 - close session // 1 - close connection // 2 - remove the connection for recovery char _2[2]; int len; int _r[2]; int itt; // Initiator Task Tag; u_int CID:16; u_int rsv:16; int cmdSN; int expStatSN; int unused[4]; } logout_req_t; typedef struct logout_rsp { char cmd; // 0x26 char cbits; char _1[2]; int len; int _2[2]; int itt; int _3; rsp_sn_t sn; short time2wait; short time2retain; int _4; } logout_rsp_t; union ipdu_u { bhs_t bhs; scsi_req_t scsi_req; scsi_rsp_t scsi_rsp; nop_out_t nop_out; nop_in_t nop_in; r2t_t r2t; data_out_t data_out; data_in_t data_in; reject_t reject; async_t async; }; /* | Sequence Numbers */ typedef struct { u_int itt; u_int cmd; u_int expCmd; u_int maxCmd; u_int stat; u_int expStat; u_int data; } sn_t; /* | in-core version of a Protocol Data Unit */ typedef struct { union ipdu_u ipdu; u_int hdr_dig; // header digest ahs_t *ahs_addr; u_int ahs_len; u_int ahs_size; // the allocated size u_char *ds_addr; u_int ds_len; u_int ds_size; // the allocated size u_int ds_dig; // data digest } pdu_t; typedef struct opvals { int port; int tags; int maxluns; int sockbufsize; int maxConnections; int maxRecvDataSegmentLength; int maxXmitDataSegmentLength; // pseudo ... int maxBurstLength; int firstBurstLength; int defaultTime2Wait; int defaultTime2Retain; int maxOutstandingR2T; int errorRecoveryLevel; int targetPortalGroupTag; boolean_t initialR2T; boolean_t immediateData; boolean_t dataPDUInOrder; boolean_t dataSequenceInOrder; char *headerDigest; char *dataDigest; char *sessionType; char *sendTargets; char *targetAddress; char *targetAlias; char *targetName; char *initiatorName; char *initiatorAlias; char *authMethod; char *chapSecret; char *chapIName; char *chapDigest; char *tgtChapName; char *tgtChapSecret; int tgtChallengeLen; u_char tgtChapID; char *tgtChapDigest; char *iqn; char *pidfile; } isc_opt_t; /* | ioctl */ #define ISCSISETSES _IOR('i', 1, int) #define ISCSISETSOC _IOW('i', 2, int) #define ISCSISETOPT _IOW('i', 5, isc_opt_t) #define ISCSIGETOPT _IOR('i', 6, isc_opt_t) #define ISCSISEND _IOW('i', 10, pdu_t) #define ISCSIRECV _IOWR('i', 11, pdu_t) #define ISCSIPING _IO('i', 20) #define ISCSISIGNAL _IOW('i', 21, int *) #define ISCSISTART _IO('i', 30) #define ISCSIRESTART _IO('i', 31) #define ISCSISTOP _IO('i', 32) typedef struct iscsi_cam { path_id_t path_id; target_id_t target_id; int target_nluns; } iscsi_cam_t; #define ISCSIGETCAM _IOR('i', 33, iscsi_cam_t)
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